Boring-machine.



D. P. JORDAN.

BORING MACHINE. APPLIGAToN PILED 11111126, 1911.

. 2 SHEETS-SHEET 2.

Patented Nov. 25, 1913.

1 Dan el Pci.

WITNESSES Y `av 6 1:1- f

A TTORNEY nemer. P. JORDAN3' or Bemis, OREGON.

Bonnie-MACHINE.

Patented Nev. e5, 1ers.

To allfwhom it may concern: i if, f Be 1t known that I, 'Danmn-PNJQRDAN, a citizen of the UnitehStates, residingat .1 Burns, in the county ofHarney'2i-lid;v State of- Oregonphav'e invented-certain nev'vand. useful Improvements' 1n 'Boring-Machines,.

' of' which thefollowing is a specification.

My invention relates to a, multiple bit bor-l v ing machine for making lock mortises inthe.

edge of doors. t

The obJect of my invention 1s to provide a boring machine lwith means for readily A' adjust-ing the bits to aline with lthe center of the edge ot the door and which may be;

used upondoors' of various thicknesses.

' A further object of my invention is tol provide novel moans for connecting and op.-v erating' theV several bits. f

A still further object is to provide a re-j l movable casing for the head of the boring" machine so that the parts will be accessible; and a still further object of my invention is. to form stops to-regulate the-distance the -bitsmay enter the edge of the door.

Referring to the accompanying drawings, in which like' references refer to like parts:

Figure l. is a side elevation of my improved boring machine; Fig. 2. is a plan view of the same; Fig. 3. is an end elevation looking from the right hand side of Fig. l; Fig. 4; is a vertical section Online1 4-4 Fig .r3, showingronly a portion of the bits; Fig. 5.A is a transverse vertical section on line 5*-5 Fig. 4; Fig. 6. is an end elevation of one of the guide detached, and Fig. 7. is a perspective view of one of the eccentric sleeves for carrying the guide-rods. y g

In the'accompanying drawings, l, 2, 3, 4 and represent the bits which are rotatably mounted in the head 6 consisting of the front plate '8 and ,the rear plate 9, each plate being made in halves, as shown in Figs..- Sand 5, which are held together by l screws l0. 1The adjacent surfaces of the saidf'plates have recesses formedtherein to receive the Shanks ofthe bits and form bear-v y ings for the same, which bearings'maybe readily separated by removing the screws 10 to facilitateiinassernbling or removing the bits. The "screws'lO also h'old inplace the casing 12, which is madein halves and said casing is made of suiiiciently heavy metaly to hold the front and 'rearzplates 8 and 9 rigidly'together, at the proper distance apart aiid'tliiisform a substantial and rigid head,.when'the parts are bolted togather,

The .sha-nkbf the center bit 3 extends beyond `the front head 8 and is provided with a squared end forv attaching means for rotating the saine. The sha-nk of the center bit is made in two parts or sections to rpermit the sprocket-Wheels 14 and 15 to be slipped on the shank and the parts of the shank are then secured together by the sleeve 16.

rlfhe bits l, 2, 4 'and 5 are rotated `by sprocket-chains 18, as shown in Figs..4 and "5. The sprojketswheel 14' on the center bit 3 drives the sprocket-wheel 20 on the bit 5.- t

The sprocket-wheell5 on. the center bit .3

drives the sprocket-wheel 21.011 `thebit lk which latter is provided with a second sprocket-Wheel 22 which drives the sprocket- Wheel 23 on the bit 4, whichV latter has Va second sprocket-Wheel 24 which drives the sprocket\vlieel 25 on the bit 2.

By connecting the bits in the above described manner the bits may be placed very close together for the reason that' the sprocket-Wheels on adjacent bits are not in the same plane, thus permitting largerV sprt'cketwvheels'tol be used to reduce the friction and all the bits can be rotated in' Where the latter are located .adjacent to said heads, and by collars 8l Where the sprocket- Wheels are lnot in a position to prevent longitudinal movement of the bits.

The guide-plates 32 and 33 which embrace the door 34, for' the purpose` obring ing the bits to the center of the latter, are

,carried by rods 35, 36, 87 and 38, the ends .of which are secured in the bosses 39 of the guide-platesby pins 40, which enter annu lar recesses in the guidefrods, so that the latter may turn `freely. Thel guide-rods are eccentrically mounted in sleeves 42, one of 'which is shown detached in Fig. 7. The said sleeves have bearing surfaces 5:43 and 44, which are rotatably mounted inrecesses formed in the bosses 45 on the `front and rear plates 8 and9 of the head. lsleeve 42 is provided with a geariwheel 46.`s'ecured at: .thejfront end f of the head andf with a v Y C011 @Seemed 911th@ sleeve at the page side of the rear-plate 9, thus preventing longitudinal movement of the sleeve.

The gear-wheels 46 on the sleeves mesh with a larger gear-wheel 50 loosely mounted upon the shank of the center bit 3, which in turn meshes with a driving 'pinion 51 secured on a shaft 52, mounted in the bearing plate -53 secured to the front plate 8.

The shaft 52 is provided with a thumb-nut 54. By rotating said thumb-nut the center gear-wheel is rotated by the pinion 51 which in turn rotates the gear-wheels 4:6

Isecured to the sleeves 42 and as the guiderods are eccentrically mounted in said sleeves they will be moved simultaneously toward or away from the door to accommodate doors of diderent thicknesses and always keep the bits centered bet-Ween the guide-plates carried by the guide-rods.

Adjustable stops 55 are mounted upon the guide-rods and the latter are graduated to inches so that the distance that the bits enter the door maybe regulated.

The guide-plates clamp the door sutticiently tight to center the bit-s, but they willmove upon the-surface of the door as the bits enter the latter. Having thus -described my invention I claim and desire to secure by Letters Patent:

l. In a boring machine vthe combination of a plurality ofvbits, a. head carrying said side of said bits, said guide-rods rotatably mounted in said guide-plates, gear-wheels upon said sleeves, a centrally located gearwheel meshing with said gear-wheels upon said sleeves, a pinion mounted on said head and meshing with said centrally located gear-wheel, and a handle on said pinion for rotating the same.

3. In a boring machine, the combination of a plurality of bits, bearing plates carrying said bits, a casing extending between said plates, guide rods eccentrically mounted in said plates and means for rotating said guide rods.

4. In a borin machine, the combination of a head consisting of two. plates, a bit mounted in said plates, sleeves mounted in said plates at either side ot' the said bit, guide rods eccentrically mounted in said sleeves and means for rotating said sleeves.

5. In a boring machine, the combination of two plates, a casing between said plates, a bit mounted in said plates, said plates made in two sections, fastening devices for securing said sections together, guide rods eccentrically mounted in said plates and means for rotating said guide rods. y

6. In a boring machine, the combination of a plurality oit bits, plates forming l'earings for said bits, a casing between said plates, sprocket wheels upon said bits, sprocket chains upon said wheels, means for rotating` one of said bits and thereby rotating the other bit-s, sleeves mounted iri said plates, guide rods eccentrically mounted in said sleeves, and a gear w eel meshing with all the earwlieels upon said sleeves, and guide p ates carried by said guide rods.

In testimony whereof I aIiX my signature in presence of two witnesses.

DANIEL I). JORDAN.

Witnesses: l Mrs. A. O. FAULKNER, A. O. FAULKNER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of latents,

Washington, D. C.

gxear wheels upon said sleeves,` 

